CN1158024C - Shoes with foldable sole structure - Google Patents

Abstract

The invention relates to a shoe with a foldable sole structure, which comprises a sole, a heel, a shoe body and the like. The sole comprises a front bottom part and a rear bottom part, wherein the front bottom part and the rear bottom part are connected by a bending device, and a flexible bottom layer is arranged under the bottom surfaces of the front bottom part and the rear bottom part. The insole is arranged on the top surfaces of the front bottom and the back bottom. Reasonable design, easy manufacture, comfortable and stable wearing.

Description

Shoes with foldable sole construction

The present invention is related to the sole structure, and more specifically, refers to a shoe with a foldable sole structure, whether it is a high-heeled or flat-bottomed structure, it is more comfortable and natural to wear. Department of clothing.

The present invention is the result of further research and development aimed at making the heel of the high-heeled shoe have a detachable high-heeled heel, and can also have the function of a low-heeled or flat-bottomed shoe.

The high-heeled soles and flat-soled soles of the various boots and shoes supplied in the existing market cannot be interchanged. The reason is that if the high-heeled shoes are constructed and the high-heeled heels are removed, they cannot have the wearing function of low-heeled or flat-soled shoes. Because the sole of traditional high-heeled shoes is made into a curved hard structure, it is permanently integrally attached to the bottom of the high-heeled shoe. Even if the high-heeled heel is removed or broken, the hard curved sole remains in its original state. In this structural state, traditional high-heeled shoes cannot be worn and walked if the high-heeled heel is removed.

In contrast, it is impossible to change traditional flat shoes into high-heeled shoes. If high-heeled shoes are installed on the soles of flat shoes, the shoes will become very unstable. Because the sole structure of flat shoes is softer and more deformable than those of high-heeled shoes, any movement will twist and deform the sole part connected to the heel of the high-heeled shoe, causing the heel of the high-heeled shoe to collapse.

The object of the present invention is to provide an innovative rigid foldable sole for use on shoes, which can provide a comfortable wearing feeling in the structure of flat shoes, and provide stability even if a high-heeled shoe is installed to form a high-heeled shoe structure. support structure. Has considerable lateral stability. Even if a high-heeled heel is attached to a flat shoe, problems such as heel collapse can be avoided. The heel of the shoe is detachable, whether it is a high heel, a low heel or a flat heel, it can be interchangeably installed on the flat sole, and the shoes are comfortable and stable to wear.

The present invention is a shoe with a foldable sole structure, which mainly includes:

A collapsible sole, which includes

a front bottom having a top surface and a bottom surface;

a rear bottom having a top surface and a bottom surface;

A bending device is arranged between the front bottom and the rear bottom to join, and forms a folding line at the junction of the front bottom and the rear bottom, so that the front bottom and the rear bottom can be along the The part of the fold line is bent;

A flexible bottom layer, fixed under the bottom surfaces of the front bottom and the rear bottom, serves as the part that actually comes into contact with the ground;

an insole is attached to the top surface of the front bottom and the rear bottom;

a heel, having a predetermined height, is located under the rear bottom end;

a shoe body attached to the sole;

Wherein, two points farthest apart from the periphery of the sole are connected to form an axis, and the inner edge of the periphery of the sole forms an inner line relative to the axis, and touches an inner point of the inner periphery of the sole farthest from the axis, The outer edge of the periphery of the sole forms an outer line with respect to the axis, and touches an outer point of the outer periphery of the sole farthest from the axis; Lines with outer points.

Wherein the sole is a sole with a high-heeled heel, and when the sole stands on the ground, the height difference between the highest point and the lowest point of the rear bottom surface from the ground is at least 2.5 cm and not higher than 12.5 cm.

Wherein the heel and the rear sole are connected by a detachable device. The detachable device includes a screw hole on the top surface of the heel for screwing a screw rod, and the screw rod is fixedly connected to the bottom surface of the tail end of the rear bottom.

Wherein the front bottom and the rear bottom are connected as a whole, and the bending device is composed of a folding groove, and the folding groove is recessed between the front bottom and the rear bottom along the folding line. The folding groove is V-shaped and has two inclined folding surfaces, which are respectively the rear end surface of the front bottom and the front end surface of the rear bottom; the inner angle of the folding groove is set so that the tail end of the current rear bottom rises upwards by more than 12.5 cm , the two folded surfaces can be made to lean against each other.

Wherein the front bottom and the rear bottom are composed of two independent sheets, and a gap is formed along the folding line to form the bending device. For example, the rear end of the front bottom forms a front slope, and the front end of the rear bottom also forms a rear slope, and the front and rear slopes fit together so that the gap is V-shaped.

Wherein the bending device comprises a front protrusion formed at the rear end of the front bottom, and a rear protrusion formed at the front end of the rear bottom, wherein the front protrusion and the rear protrusion each have a through hole and are engaged with each other, and are passed through the front and rear protrusions by a bolt. In the through hole of the rear protrusion, they are connected to form a loose-leaf structure that can be bent and moved along the fold line.

Wherein the tail end of the front part of the shoe body can be provided with an elastic element connected to the front part of the rear bottom, and the rear part of the shoe can be provided with another elastic element connected to the rear part of the front bottom.

Wherein the heel portion of the top surface of the rear bottom is provided with a shallow concave curved portion. The top surface of the rear bottom has a slightly raised portion on the inner edge between the fold line and the heel.

Wherein the top surface of the rear bottom can also be flat.

Wherein the rear bottom is made of hard rigid material.

The advantage of the present invention is that because it is a foldable sole structure, it eliminates the discomfort brought by most traditional high-heeled shoes. With the flat rear sole construction, there is no pressure on the sensitive arch of the foot. Moreover, both the ball of the foot and the heel can be supported, and at the same time can be in close contact with the sole of the shoe as if walking on flat ground, without the hindrance caused by the curved design of traditional high-heeled shoes. With the installation of the bending device, the joint between the human foot and the sole enables the shoe to correctly follow the movement of the human foot, avoiding the friction damage caused by the body of the traditional high-heeled shoe and the human foot. In addition, the solid joint between the front bottom and the rear bottom can provide balance force from the toes to immediately respond to the instability of the heel, so as to eliminate the shaking phenomenon that exists in traditional high heels. Furthermore, the top surface of the rear bottom is set to have an inclined surface from the inside to the outside during normal walking, which eliminates the lower back pain caused by traditional high-heeled shoes. The structure design is scientific and reasonable, comfortable and stable to wear, beneficial to people's health, easy to produce and realize, and has great economic and social benefits.

The present invention has the following drawings:

Figure 1. Schematic diagram of the arch bridge structure.

Figure 2. A schematic diagram showing a foot lying flat on the ground.

Figure 3 is a schematic diagram showing a foot with the heel raised to a high heel position.

Fig. 4A and Fig. 4B are respectively the rear views of the heel structure of the high-heeled shoes in which the present invention is applied.

Fig. 5A and Fig. 5B are respectively the rear views of the heel structure with the application of the low sole of the present invention.

Fig. 6 is a schematic diagram of the anatomy of a human foot, showing the relative relationship between the foot and the broken lines shown in Fig. 8, Fig. 9A and Fig. 9B.

Fig. 7. A schematic diagram of the relationship between each weight support point of the foot bone of the human body.

Figure 8. A top view of a shoe constructed in accordance with the present invention.

Figure 9A. Is a side view of a shoe constructed in accordance with the present invention.

Fig. 9B is a sectional side view of the shoe sole of the present invention.

Fig. 9C is a schematic diagram of the insole of the present invention.

Fig. 9D is a three-dimensional schematic view of the present invention.

10A, 10B, and 10C are schematic cross-sectional side views of the bending structure of the present invention.

11A, 11B, and 11C are schematic cross-sectional side views of another embodiment of the present invention.

12A, 12B, 12C, 12D, and 12E are schematic diagrams of bending structure of another embodiment of the present invention and three-dimensional schematic diagrams of insoles and shoes.

The numbers in the figure are as follows:

5. Balance line 6. Balance line 7. Axis

8. The innermost point 9. The outermost point 12. The front part of the shoe

14. Front bottom 18. Rear part of shoe 141. Inclined folding surface

142. Front bevel 143. Front protrusion 20. Rear bottom

22. Shoe body 24. Bending device 26. Heel

201. Inclined folding surface 202. Rear bevel 203. Rear protrusion

241. V-shaped folding groove 242. Gap 30. Folded line

31. The lowest point of the first metatarsal head 32. The lowest point of the fifth metatarsal head

33. Heel bone 34. Ankle 40. First metatarsal bone

42. Fifth metatarsal bone 51. Bottom layer 52. Insole

53. Pin 66. Locking screw 70. Screw hole

Hereby give embodiment and cooperate accompanying drawing to describe in detail as follows:

Before giving examples, the skeleton structure of the human foot is made a brief introduction:

As shown in Figure 1, the arch bridge structure of the bridge structure is very strong when the weight is applied from the top to the bottom. However, if the weight is applied from the bottom up, the arched structure is likely to be damaged or damaged. Please refer to Figure 2, which shows a foot lying flat on the ground with its arch clearly visible. The arches of the foot act similarly to the arches of the bridges described above for distributing the weight applied to the arches to the respective lower ends of the arches. Therefore, like the arch bridge shown in Figure 1, the foot shown in Figure 2 should not have any force applied upwards to the underside of its arch.

As shown in Figure 3, when the heel of a foot is naturally lifted upwards, the ball of the foot remains firmly flat on the ground, and the heel changes its vertical position relative to the ground until the inside of the heel of the sole is higher than the sole of the ground. outside of the heel. Figure 3 also shows the fact that the shape of the arch does not change when the heel is raised.

FIG. 6 shows the bone structure of the foot revealed in FIG. 2 . The human foot has five bones called metatarsals that project forward and downward to each toe. Each of these long and thin metatarsals has a roughly bulbous terminal end at its front end, and the bulbous anterior end of these metatarsals is the head of the metatarsal head. Research has found that any walking or standing action, the foot itself will make it align with the folded sole, so that the fold line 30 directly extends to the lowest point of the first middle metatarsal head 31 (that is, the middle metatarsal connected with the largest big toe) point (or point of weight support) and the lowest point (or point of weight support) of the fifth middle metatarsal head 32 (ie, the middle metatarsal connected to the smallest toe). Further analysis revealed that this was consistent with some known principles of the foot's weight-supporting function. The "tripod" principle is one of the most effective natural designs for weight support. When standing still, the feet act like a "tripod" so that the weight from the legs is transferred to the immobile parts of the feet, that is, Distributed at the rear of the heel and at the anterior nadir of the heads of the first and fifth middle metatarsals.

The human skeleton is designed to bear the weight of the body, and the metatarsals form the front structure of the foot. Beyond that, there is no other possible weight support point. Experiments further confirmed the above-mentioned principle analysis. Any normal and correct functioning foot, when walking or standing in a high-heeled state, will bend along a fold line that extends to the first and fifth metatarsal heads. under the Ministry. This is a general rule for everyone, and it will not vary from person to person.

Figure 7 is a simplified schematic diagram showing how the bone structure of the foot distributes weight when a person is walking or standing. The weight from the leg is sent down the foot 34 and distributed rearwardly at the lowest point of the heel bone 33 and forwardly to the lowest point of the first and fifth middle metatarsal heads 31 , 32 .

If a foot skeletal model is flatly pressed on a level ground, it can be found that except the first middle metatarsal head 31, the fifth middle metatarsal 42 is not in contact with any part of the ground, and the lowest point 33 of the heel bone is also contact with the ground. The connecting point 31 and point 32 is a broken line 30, which is the natural broken line of the human foot. Wherein, at the part in front of the folding line 30, the bones of the second, third and fourth middle metatarsals and all toes are in contact with the ground. However, at the rear portion of the foot after the fold line 30, only three points 31, 32 and 33 can be in contact with the ground, and this triangular weight bearing point bears almost all of the weight that is sent to the flat foot shown in Figure 2 by the leg. the weight of the part.

If the heel of the foot as shown in Fig. 2 is lifted off the ground to the state shown in Fig. 3, point 33 will lift and points 31, 32 will remain in contact with the ground. That is, the planar relative relationship between the points 31, 32 and 33 shown in FIG. 7 is maintained. Among them, the distance between point 31 and point 33, the distance between point 33 and point 32, and the distance between point 31 and point 32, whether it is for the flat foot shown in Figure 2 or the pad height shown in Figure 3 Same for the feet. This is based on the natural law of the weight-bearing function of the bones of the foot, and it does not change for anyone. The above analysis has been studied using an actual skeletal model of the foot, and experiments have revealed that the above relationship is maintained for a foot with a fully functional and fully functional structure. Therefore, even if the foot is bent along the fold line 30 , the points 31 , 32 and 33 of the complete foot cannot directly touch the ground, but they are still the lowest weight support points of the foot.

After research, it is found that there is only one fixed relationship between the human heel and the metatarsal heads in the first to fifth joints, and the relationship remains the same even when the human foot is bearing weight. Therefore, the plane relationship between the heel and the ball of the foot as shown in Figure 2 is exactly the same as the plane relationship between the heel and the ball of the foot as shown in Figure 3. Standing on the plane (as shown in Figure 2) or standing on the feet (as shown in Figure 3), the distance between the heel and the heads of the first to fifth metatarsal heads and the shape of the arch are maintained in the same condition and different will change.

According to above-mentioned research result, guide the design whole process of the present invention. Set forth as follows with embodiment:

Referring to Fig. 9A, 9B, and 9C, a shoe with a foldable sole structure of the present invention includes a front bottom 14, which has a top surface and a bottom surface, and is connected to a rear bottom 20, and the rear bottom 20 It has a flat top surface and a bottom surface. A bending device 24 is arranged between the front bottom 14 and the rear bottom 20 along a straight line. Wherein, if the ground is flat and the sole structure is placed upright on the ground, the trailing edge of the top surface of the front bottom and the leading edge of the top of the rear bottom are positioned at the same height from the ground.

Figure 8 shows the location of the creases on the sole of the shoe. If the peripheral edge of the shoe is placed between the two balance lines 5 and 6 of a surface, and each balance line is in contact with the shoe peripheral edge at one point, and the distance between the two balance lines 5 and 6 is maximized, then , the above-mentioned two contacts can be connected into a line as the axis 7 of the shoe. If a straight line is drawn balanced on the axis 7 and only touches the point on the periphery of the shoe closest to the other foot, then this point is the innermost point 8 on the periphery of the sole. If another straight line balanced on axis 7 touches only the point on the periphery of the shoe that is farthest from the other foot, then this point is the outermost point 9 on the periphery of the sole. For a typical roughly oval shoe, the natural crease line of the foot would overlap with the line connecting the inside point 8 and the outside point of the sole. That is, the fold line 30 shown in FIG. 8 will coincide with the fold line 30 shown in FIGS. 6 and 7 . No matter the wearer who wears the shoes shown in FIG. 8 is walking or standing still, his feet will self-adjust to the lowest points of the first and fifth middle metatarsal heads 31 and 32 just above the sole crease line 30 .

A shoe with a foldable sole structure according to the present invention can correctly follow the movement of the wearer's foot during normal walking movements, and will provide the heel with a stable shoe platform for keeping the heel in contact with the ground at the ball of the foot Under certain conditions, it can be lifted to the maximum height. For typical foot dimensions, this maximum heel height is approximately 12.5 cm. According to the structure of the foldable sole of the present invention, the front bottom is kept actually positioned on the front part of the corresponding wearer's foot, while the rear bottom is kept actually positioned on the rear part of the corresponding wearer's foot. The deflection state of the shoe and the foot coincides completely with the aforementioned fold line. Moreover, tests have shown that it will not inhibit any walking of the feet or even the dance movements that the wearer wants to perform.

Thus, a shoe constructed according to the invention may be a high-heeled shoe in which the high-heeled shoe is detachable and can be used as a high-heeled shoe as well as a low-heeled shoe or a flat shoe. As shown in Fig. 9B, the heel 26 is in a detached state. According to this embodiment, the heel 26 is provided with a screw hole 70 for screwing a locking screw 66 fixedly connected to the bottom surface of the tail end of the rear bottom 20 .

When a shoe body 22 is arranged on the sole structure shown in FIG. 9B, the shoe shown in FIG. 9A is constituted, which provides a front section 12, which includes the front bottom 14 and the front section shoe body arranged thereon; And a rear portion 18, which includes a rear bottom 20 and a rear body disposed thereon.

According to this embodiment, the rear end of the front shoe body is provided with an elastic element connected to the front portion of the rear bottom 20 , and the front end of the rear shoe body is also provided with an elastic element connected to the rear portion of the front bottom 14 . In this way, when the heel of the high heel is removed, the body of the shoe can adjust its shape and provide the function of a flat shoe.

When manufacturing the above-mentioned shoe body, a special shoe shape must be adopted. The so-called shoe shape is exactly the wooden or hard glue mold of the inner shape of the shoe, which is placed on the sole of the shoe, and the shoe body material is installed and closely attached to the shoe shape to form a complete shoe. For flat shoes, the shoe shape is very close to the shape of the human foot, but for traditional high-heeled shoes, the shoe shape combines all the deformed shapes of traditional high-heeled shoes, so the shoe shape of traditional high-heeled shoes only depends on the shape of the shoe Arched, even though the real foot is not. Furthermore, the shoe shape of the traditional high-heeled shoes has a deformed ball of the foot to match the shape of this part of the traditional high-heeled shoes. In addition, the shoe shape of traditional high-heeled shoes does not take into account the correct design of the inclined surface from the inner side to the outer side of the heel.

Since the high-heeled shoes provided by the present invention are designed to allow the wearer to support the wearer's feet like wearing flat shoes, the shoe shape of flat shoes can be applied as the prototype shoe shape of the present invention. The shoe shape of the flat shoe is flattened and cut along the above-mentioned fold line, and the cut end surface is ground so that it can be rebonded correctly according to the natural height of the human foot (as shown in Figure 3). There is no deformed shape of traditional high-heeled shoes.

Please refer to Fig. 10A, the foldable sole structure of the present invention, in addition to including the aforementioned front bottom 14, the rear bottom 20 and the bending device 24, also includes a flexible bottom layer 51 that is in contact with the ground and for the human body. An insole 52 for feet to be placed on comfortably, wherein the bottom layer 51 is made of flexible wear-resistant film or vacuum leather, and the insole 52 is made of such as sponge or soft rubber material or leather.

According to this embodiment, the bending device 24 is a V-shaped folding groove 241 . The front bottom 14 and the rear bottom 20 are integrally formed by rubber or plate-like leather, and the folding groove 241 is located along the aforementioned folding line 30 (as shown in Fig. 6, Fig. 7 and Fig. 8 ), and is recessed in this Top surface of the midsole. The front part of the folding groove 241 in the middle bottom is the front bottom 14, and the front part of the human foot folding line 30 (ie the ball of the foot and each toe) is worn on it. The rear part of the upper folding groove 241 in the middle bottom is the rear bottom 20, and the rear part of the human foot folding line (ie the heel and the arched position between the heel and the ball of the foot) is worn on it. The folding groove 241 forms two inclined folding surfaces 141, 201 which are respectively the rear end surface of the front bottom 14 and the front end surface of the rear bottom. The inclination of the two folding surfaces 141 and 201, that is, the inner angle of the folding groove 241, is set so that when the tail end of the rear bottom 20 is lifted up to 12.5 cm or more, the two folding surfaces 141 and 201 can be close together, as shown in the figure 10C. The bottom layer 51 and the insole 52 are set in the shape of a midsole, wherein the front bottom 14 and the rear bottom 20 are sewn or fixed on the bottom plate 51, and the insole 52 is placed flat on the top surface of the midsole to cover the front bottom 14 , the rear bottom 20 and the folding groove 241, avoiding any feeling that the wearing person's sole has the folding groove 241 existing.

As shown in Figure 1DA, it is a schematic diagram of the structure of the foldable sole of the present invention in the state of flat shoes, as shown in Figure 10B, it is a schematic view of the structure of the foldable sole of the present invention in the state of high-heeled shoes, and the two folded surfaces 141 of the folding groove 241 And 201 is slightly inward. Basically, when the flat shoe is walking and the heel is lifted, the change of the sole of the present invention is also as shown in Figure 10B. Fig. 10C shows the situation that when the heel of the high-heeled shoes applying the sole of the present invention is lifted during walking, the sole is lifted accordingly. With the setting of the bending device 24, the sole of the present invention naturally and easily follows the folding line 30 (that is, the folding groove 241) during walking. ) bending, in line with the natural changes of the human foot during walking, fully and stably bear the weight of the human body, thus providing a comfortable feeling that traditional high heels do not have.

The bending device 24 provides the effect of natural bending of the sole along the folding line, which can also be achieved by the structure of another embodiment below. 11A, 11B, and 11C, the front bottom 14 and the rear bottom 20 are composed of two independent sheets, wherein a front slope 142 is formed at the rear end of the front bottom, and a rear slope 202 is formed at the front end of the rear bottom. The front bottom 14 and the rear bottom 20 are stitched together on the bottom layer 51 as mentioned above, and the insole 52 is placed on the front and rear bottoms 14 , 20 . Therefore, a V-shaped gap 242 is formed between the front bottom 14 and the rear bottom 20 along the aforementioned folding line 30 to form the bending device 24 , thereby providing a foldable effect between the front bottom 14 and the rear bottom 20 . Figure 11B shows a schematic view of the sole of a high-heeled shoe. With the gap 242, the rear bottom 20 can be lifted naturally and easily, and can be lifted when walking as shown in Figure 11C.

Please refer to Fig. 12A, 12B, 12C, 12D, and 12E, which are another feasible embodiment, wherein the front bottom 14 and the rear bottom 20 are made of metal such as aluminum, and the bending device 24 includes the front bottom At least one front protrusion 143 formed at the rear end of 14 and at least one rear protrusion 203 at the front end of rear bottom 20 . Wherein the sum of the widths of the front protrusion 143 and the rear protrusion 203 is the length of the folding line 30, and each is provided with a through hole, so that the front and rear protrusions 143 and 203 are snapped together and connected through the through hole by a latch 53. Join together to form a bendable loose-leaf structure, and the bending part of this loose-leaf structure is set at the position of the aforementioned folding line 30 .

In each of the above-mentioned bending devices 24, the hard front bottom 14 and rear bottom 20 and the bending device 24 that connects the front and rear bottoms into one body provide a foldable sole structure that has anti- Twisting effect, so neither the front bottom 14 nor the rear bottom 20 will twist horizontally. This feature provides the balancing forces imparted to the toes of the front bottom 14 for neutralizing the swaying situation of the rear bottom due to the instability caused by the high-heeled heel. Therefore, the rear bottom 20 of the present invention can be freely bent relative to the front bottom 14 along the fold line 30, but will not twist laterally along the fold line.

In summary, the above are only some preferred embodiments listed in the present invention. However, there are other possible implementations of the foldable sole structure and the detachable heel structure of the present invention, such as fixing the heel detachably under the sole with a snap-on structure. Therefore, the present invention should not be limited to the above-described embodiment configurations, that is, the present invention can be widely applied to many different shoe designs. All changes, changes or equivalent implementation devices, as long as they are within the scope of the patent application of the present invention, should be identified as within the scope of the present invention.

For the above reasons, some qualitatively weaker than the above-described embodiments of the present invention, but still most of the improvements that enable the present invention to be applied to high-heeled shoes of different heights and outperform conventional high-heeled shoes are expected. For example, although the top surface of the rear bottom 20 is preferably flat, it does not necessarily need to be flat because no two people have exactly the same sole profile and the flat surface can properly support any foot. Absolutely flat. Also, since most of the sole of the foot rises under the first middle metatarsal to form this arch, the sole rises at and near this point and still functions properly. Also, the sole could be concave under the heel or under the metatarsal head and still function as described above. Therefore, the general outline of the sole of the foot has to be embossed on the top surface of the rear bottom 20, and the present invention can still exert the expected effect. This will not make the present invention closer to the traditional high-heeled shoes, but if the designer of the present invention forcibly utilizes a sole that takes the foot bed as the model, this change will not cause any benefits, but must be disclosed as the scope of the present invention within.

If the ground is a flat surface and the shoe is flat on the ground, the ideal design is to balance the fold line with the ground. Although slight deviation will weaken the benefit of the present invention, the expected effect of the present invention can still be brought into play. Also, if the front bottom 14 is set to be flexible or provided with multiple bending devices, although it is relatively unstable and comfortable, it still works and is superior to traditional shoe structures.

Claims (13)

1. A shoe with a foldable sole structure, characterized in that it mainly includes: a foldable sole, which includes a front bottom having a top surface and a bottom surface; a rear bottom having a top surface and a bottom surface; A bending device is arranged between the front bottom and the rear bottom to join, and forms a folding line at the junction of the front bottom and the rear bottom, so that the front bottom and the rear bottom can be along the The part of the fold line is bent; A flexible bottom layer, fixed under the bottom surfaces of the front bottom and the rear bottom, serves as the part that actually comes into contact with the ground; an insole is attached to the top surface of the front bottom and the rear bottom; a heel, having a predetermined height, is located under the rear bottom end; a shoe body attached to the sole; Two points farthest apart from the periphery of the sole are connected to form an axis, and the inner edge of the periphery of the sole forms an inner line relative to the axis, and touches an inner point of the inner periphery of the sole farthest from the axis, the sole The outer edge of the peripheral edge forms an outer line with respect to the axis, and touches an outer point of the outer peripheral edge of the shoe sole farthest from the axis; straight line. 2. A shoe with a foldable sole structure according to claim 1, characterized in that: the sole is a sole with a high-heeled heel, and when the sole stands on the ground, the top surface of the rear bottom is separated from the ground. The height difference between the highest point and the lowest point is at least 2.5 cm and not higher than 12.5 cm. 3. A shoe with a foldable sole structure according to claim 2, characterized in that: the heel and the rear sole are connected by a detachable device. 4. A shoe with a foldable sole structure according to claim 3, characterized in that the detachable device includes a screw hole on the top surface of the heel for screwing a screw, and the screw is fastened connected to the bottom surface of the rear end of the rear bottom. 5. A shoe with a foldable sole structure according to claims 1, 2, and 3, characterized in that: the front bottom and the rear bottom are connected as one, and the bending device is composed of a folding groove In this configuration, the folding groove is recessed between the front bottom and the rear bottom along the folding line. 6. A shoe with a foldable sole structure according to claim 5, characterized in that: the fold groove is V-shaped and has two inclined fold surfaces, which are respectively the rear end surface of the front bottom and the rear end of the rear bottom. The front face; the internal angle of the folding groove is set so that when the tail end of the rear bottom is lifted upwards more than 12.5 cm, the two folding surfaces can be close together. 7. A shoe with a foldable sole structure according to claim 1, 2, 3 or 4, characterized in that: the front bottom and the rear bottom are composed of two independent pieces, and along the fold line The position forms a gap, that is, the rear end of the front bottom forms a front bevel, and the front end of the rear bottom also forms a rear bevel, and the front and rear bevels fit together to make the gap V-shaped. 8. A shoe with a foldable sole structure according to claim 1.2.3 or 4, characterized in that: the bending device comprises a front protrusion formed by the rear end of the front bottom, and a rear protrusion formed by the front end of the rear bottom. The protrusions, wherein the front protrusion and the rear protrusion each have a through hole and engage with each other, and a bolt is passed through the through hole of the front and rear protrusions. 9. A shoe with a foldable sole structure according to claim 1, 2, 3 or 4, characterized in that: the tail end of the front part of the shoe body can be provided with an elastic element connected to the front part of the rear bottom , and the back part of the shoe is provided with another elastic element connected to the rear part of the front bottom. 10. A shoe with a foldable sole structure according to claim 1, characterized in that: the heel portion of the top surface of the rear bottom is provided with a shallow concave portion. 11. A shoe with a foldable sole structure according to claim 1, characterized in that: the top surface of the rear bottom has a slightly raised portion on the inner edge between the fold line and the heel. 12. A shoe with a foldable sole structure according to claim 1.2.3 or 4, characterized in that: the top surface of the rear bottom can also be flat. 13. A shoe with a foldable sole structure according to claim 1.2.3 or 4, characterized in that: the rear bottom is made of hard rigid material.

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